fix bbox for bldgs to include path

docs/lanes.md

@@ -126,7 +126,8 @@ wait slow down even more -- before any of this change, lanes on adjacent roads s
 		- https://www.politesi.polimi.it/bitstream/10589/112826/4/2015_10_TOPTAS.pdf
 		- just make polygons around center lines, then intersect?
 	- shift turn icons and stop markings and such away from crosswalk
-	- depict traffic lights
+	- draw stop signs as rounded ellipse (hard without using rotations in GfxCtx)
+	- depict traffic lights (3 colored circles on a black rectangle)
 	- figure out what to do about yellow center lines
 		- yellow and white lines intersect cars and turn icons and such
 		- who should own drawing them?
@@ -156,3 +157,9 @@ visually.
 
 - Easy representation: draw red line / stop sign in some driving lanes. Leave the priority lanes alone.
 - Harder: draw a stop sign on the side of the road by some lanes. Won't this look weird top-down and at certain angles?
+
+Traffic signals?
+- per lane would be weird.
+- drawing turn icons as red/yellow/green is pretty clear...
+- could draw an unaligned signal box with 3 circles in the middle of the intersection, but what does it represent? maybe just an initial indicator of what's going on; not full detail.
+- similarly, draw a single stop sign in the middle of other intersections? :P

editor/src/render/building.rs

@@ -58,6 +58,10 @@ impl DrawBuilding {
     }
 
     pub fn get_bbox(&self) -> Rect {
-        geometry::get_bbox_for_polygons(&[self.polygon.clone()])
+        let mut polygons = vec![self.polygon.clone()];
+        if let Some(line) = self.front_path {
+            polygons.push(vec![[line[0], line[1]], [line[2], line[3]]]);
+        }
+        geometry::get_bbox_for_polygons(&polygons)
     }
 }

editor/src/render/intersection.rs

@@ -16,7 +16,7 @@ use std::f64;
 #[derive(Debug)]
 pub struct DrawIntersection {
     pub id: map_model::IntersectionID,
-    pub point: Vec2d,
+    pub center: Vec2d,
 
     pub polygon: Vec<Vec2d>,
     crosswalks: Vec<Vec<(Vec2d, Vec2d)>>,
@@ -52,7 +52,7 @@ impl DrawIntersection {
 
         DrawIntersection {
             id: inter.id,
-            point: [center.x(), center.y()],
+            center: [center.x(), center.y()],
             polygon: pts,
             crosswalks: calculate_crosswalks(inter, map),
         }